Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Tsukuba | 2023/03/27 00:30 | Taiyo Yamanaka v Naoki Tajima | 6-4,5-7,8-10 |
| ITF M25 Canberra | 2023/03/22 03:45 | Dane Sweeny v Naoki Tajima | 6-1,6-3 |
| ITF M25 Canberra | 2023/03/20 23:00 | Naoki Tajima v Blake Bayldon | 6-3,6-0 |
| ITF M25 Canberra | 2023/03/20 01:30 | Naoki Tajima v Mason Naumovski | 6-3,7-6 |
| ITF M25 Canberra | 2023/03/15 23:00 | Dayne Kelly v Naoki Tajima | 6-1,6-2 |
| ITF M25 Canberra | 2023/03/14 23:00 | Ko Suzuki v Naoki Tajima | 2-6,5-7 |
| ITF M25 Canberra | 2023/03/13 23:00 | Naoki Tajima v Marin Dumitru | 6-3,6-1 |
| ITF M25 Canberra | 2023/03/13 01:30 | Naoki Tajima v Jamie Krattiger | 6-1,6-3 |
| ITF M25 Tsukuba | 2023/03/27 00:30 | Yamato Sueoka v Ryotaro Matsumura | 2-6,6-7 |
| ITF M25 Loule | 2023/03/01 13:30 | Goncalo Oliveira v Ryotaro Matsumura | 6-1,6-2 |
| ITF M25 Loule | 2023/02/28 14:10 | Harry Wendelken v Ryotaro Matsumura | 7-5,3-6,4-10 |
| ITF M25 Loule | 2023/02/27 10:00 | Joao Dinis Silva v Ryotaro Matsumura | 6-7,3-6 |
| ITF M25 Loule | 2023/02/26 10:00 | Adam Blecha v Ryotaro Matsumura | 2-6,4-6 |
| ITF M25 Faro | 2023/02/20 10:00 | Guy Den Heijer v Ryotaro Matsumura | 6-4,4-6,10-3 |
| ITF M25 Faro | 2023/02/19 10:00 | Miguel Garcia v Ryotaro Matsumura | 1-6,3-6 |
| ITF M25 Vila Real de Santo Antonio | 2023/02/14 09:30 | Christian Sigsgaard v Ryotaro Matsumura | 6-1,6-1 |